免费的tutorials

http://www.vogella.com/tutorials/
里面有算法和设计模型

The vogella company provides premium Eclipse, Android and Git training and development support

Tutorial categories at vogella.com
Android Programming

Tutorials about Android development and related topics.

Android tutorials

Eclipse IDE and Tools

Learn programming Java and more with Eclipse.

Eclipse IDE tutorials
Eclipse RCP/Plug-ins

Tutorials to program Eclipse RCP and Plug-ins.

Eclipse RCP/Plugins tutorials

Version Control

Tutorials about version control systems.

Version control tutorials
Web

Tutorials about Web development and publishing.

Web Tutorials

Java

Tutorials about standard Java programming.

Java Tutorials
Technology

Tutorials which do not fit into another category.

Technology Tutorials

Google

Tutorials about Google related technology.

Google Tutorials
Algorithms

Tutorials about a variety of
Algorithms.

Algorithms

Design Pattern

Tutorials about Design Patterns in Java.

Design Patterns

收下了，学习学习